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<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>九九乘法表</title>
    </head>
    <body>
        <p1>九九乘法表</p1>
        <script>
        var str = '';
        for(var i = 1; i < 10; i++) {   
            for(var j = 1; j <= i; j++){  
                str += j + "X" + i + "=" + i * j + "\t";
            }
            str = str +"\n" ; 
        }
        console.log(str);
        </script>
    </body>
</html>